How severe is CVE-2026-43944?

CVE-2026-43944 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-43944 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-43944?

CVE-2026-43944 affects Electerm Project Electerm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-43944?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-43944 have an EU (EUVD) identifier?

Yes. CVE-2026-43944 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28516.

When was CVE-2026-43944 published?

CVE-2026-43944 was published on 2026-05-08 and last updated on 2026-06-17.

CVE-2026-43944

CVE-2026-43944 is a critical-severity vulnerability in Electerm Project Electerm with a CVSS 3.x base score of 9.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Critical (CVSS 3.x base score 9.6)
CVSS v4: 9.4
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-28516
Weakness: CWE-20
Affected product: Electerm Project Electerm
Published: 2026-05-08
Last modified: 2026-06-17

Description

electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. From versions 3.0.6 to before 3.8.15, electerm is vulnerable to arbitrary local code execution via deep links, CLI --opts, or crafted shortcuts. Exploit requires clicking a crafted electerm://... link or opening a crafted shortcut/command that launches electerm with attacker-controlled opts. This issue has been patched in version 3.8.15.

Frequently asked questions

What is CVE-2026-43944?: electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. From versions 3.0.6 to before 3.8.15, electerm is vulnerable to arbitrary local code execution via deep links, CLI --opts, or crafted shortcuts. Exploit requires clicking a crafted electerm://... link or opening a crafted shortcut/command that launches electerm with attacker-controlled opts. This issue has been patched in version 3.8.15.
How severe is CVE-2026-43944?: CVE-2026-43944 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-43944 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-43944?: CVE-2026-43944 affects Electerm Project Electerm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-43944?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-43944 have an EU (EUVD) identifier?: Yes. CVE-2026-43944 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28516.
When was CVE-2026-43944 published?: CVE-2026-43944 was published on 2026-05-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:electerm_project:electerm:*:*:*:*:*:*:*:*

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CVE-2026-41501 — Critical (CVSS 9.8): electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. Prior to version 3.3.8, a…
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